Charles stewart forbes



Patented Apr. 4, I899.

ll/ ll llll 'Iu'lllll No. 622,6l6.

C. S. FORBES. ACETYLENE GAS GENEBATGR.

(Application filed Oct. 3, 1898.)

(No Model.)

m: Nomzss Pmzns Cn. PHOTO-Tall. WASHINGTON. u. c.

rrn TATES A FFJI CHARLES STEIVART FORBES, OF STRATHDON, SCOTLAND.

ACETYLENE GAS GENERATOR.

SPECIFICATION forming part of Letters Patent No. 622,616, dated April 4,1899.

Application filed October 3,1898. $erial No. 692.499. (N model.)

To all whom 23/; Tim/y concern.-

Be it known that I, CHARLES STEWART FORBES, baronet, a subject of theQueen of Great Britain, residing at Castle Newe, Strathdon by Aberdeen,Scotland, have invented certain new and useful Improvements in orApplicable to Acetylene-Generators; and I do hereby declare thefollowingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

My invention relates to improvements in or applicable toacetylene-generators,the objects I have in view being to simplify theconstruction of such apparatus and provide an efficient means forregulating the supply of water and cleaning the apertures through whichit is admitted to the carbid.

My invention will be better understood by reference to the annexeddrawings, in which-- Figure 1 is a longitudinal section through thecomplete apparatus. Fig. 2 is a part plan showing the means employed forclosing the mouth of the generator. Fig. Sis an enlarged sectional viewof dripping-nozzle cone and ring. Fig. 4 shows an enlarged view ofbayonet-joint. Fig. 5 is a plan of gas vessel.

In the drawin'gs, 1 is the generating-chamber. This is preferablya plaincasting of iron. It may, however, be built up or otherwise made in anysuitable metal and fitted with feet 2. A tray or ledge 3 is formed asshown, and on this is mounted a tank 4. A tube 5, of cast or wroughtiron or other suitable metal,is threaded by means of a nipple orotherwise, as at 5, into the top of the generator, the joint inside thetank being made with a rubber ring or equivalent packing G. On this tubeis mounted or formed a cone 7, through which in a suitable position ahole 8 is bored. This I prefer to tap, and into it I insert aperforatedscrewed dripping-nozzle 8, the head having a nick 8 and beingcountersunk. The ring 9, formed of metal, is drilled with acorresponding hole 9 and then bored out and ground to fit the cone. Itis formed with a web 9 and flange 9",by whichit is secured to thepressure vessel 10, which is thus supported by the tube 5, but is freeto turn upon it. The web 9" of the ring is cored out, as at 9. The topof the pressure vessel is fitted with an air-cock 10 and handle 10 andit may be marked with arrows 10", a pointer 1O being placed upon theside of the tank to indicate the relative positions of the apertures.The mouth of the generating-chamber is fitted with a cover 11, fastenedby a cross-bar 12 and screw 12, fitted with handle 13, the two ends ofthe cross-bar being mounted in slots 12" in the lugs 12'. The joint ismade by a packing-ring of rubber or the like 14. WVit-hin thegenerating-chamber is a trough or tray 15, di vided into two portions byperforated plates 15, so arranged as that the water falling from thedripping-nozzle shall drop into the space 16 and be absorbed by thecarbidofealcium placed in each portion. A service-pipe 17 conveys theacetylene gas formed to the lamps or to a gasometer, as the case may be.To prevent the pressure vessel from being lifted off the tube by anyundue pressure, I form a long T- shaped slot or bayonet joint 18, whichengages with a pin 19, driven into the cone.

By means of the construction described the dripping-nozzle, ring, andair vessel can be removed, the apertures cleaned, and the apparatusreplaced in a few minutes.

The tank is fitted with two cocks 20 21", the heightof the water beingregulated by the upper one and the level being maintained by a ball-cockor the like device controlling the main supply. The lowercockis employedfor emptying the cistern.

A drop-handle 15 is fitted to the end of the carbid-tray for the purposeof withdrawing same.

The operation of my invention is as follows: The cover of the generatoris removed, the

trough Withdrawn, charged with carbid of a calcium, and replaced. Thecistern is now filled with water and the air-cock opened. The water thenrises in the pressure-chamber. The pressure-chamber is now turned aroundby the handle until. the holes in the ring and nozzle are coincident.

sure of gas increases beyond that required, the water is forceddownwardly in the vessel 10 until beneath the aperture in the ring, and

the further generation of gas is moderated or ceases altogether untilthe normal pressure is restored. By turning around the pressure vesseland thus restricting or augmenting the amount of Water passing throughthe nozzle the generation of the gas may be controlled and undue heatingavoided.

Having described my invention, What I claim, and desire to secure byLetters Patent, 1s

1. In an acetylene-generator, the combination of a generating-chamberand a combined gas and dripping tube extending upward therefrom with atank supported on top of the said generating-chamber, and apressurechamber which surrounds the said tu be Within the said tank andis supported thereby, being free to turn thereon, the said tube andchamber being providedat one point with means of communication adaptedto be opened and closed by such turning for the purpose of regulatingthe supply of Water, substantially as set forth.

2. In an acetylene-generator, the combination with a generating-chamberhaving an openingat the top and means for supplying water through thesaid opening, of a tray arranged to be inclosed within the saidgenerator andprovided with perforated partitionplates 15 leaving a space16 between them under the said opening, the carbid of calcium beingarranged between the said plates and the ends of the said tray in orderthat the Water may reach it through the said' perforations,substantially as set forth.

3. In an acetylene-gas generator, the combination of agenerating-chamber with atank, a tube making communication between thesaid chamber and tank, and a regulating device rotatable on the saidtube for regulating the supply of Water, the said device and tube beingconnected by a bayonet-joint, substantially as set forth.

4. In an acetylene-gas generator, the combination of agenerating-chamberand its supply-tube having a cone 7 formed thereon anda nozzle 'extendingin through the same, of a ring 9 bored to fit thesaid cone and having an opening which registers with the said noz

